This electronic supplement contains two tables. One is the event catalog for earthquakes used in the analysis (Table S1); and the second (Table S2) is a list of events which are in each of the seven clusters analyzed, with the event IDs being the same in both tables so that they can be linked.
Table S1 [Plain text comma-separated values; ~161 KB]. Event catalog used in the analysis. EventID is the Southern California Seismic Network (SCSN) event ID; lat is the event latitude (°); long is event longitude (°); year, day, hour, min, s, and ms give the event origin time; M_moment is the moment magnitude as calculated in the analysis from equation (4) in the main article from local magnitude.
Table S2 [Plain text comma-separated values; ~12 KB]. Cluster catalog for the seven clusters used in the analysis, shown on the map in Figure 4 in the main article. Each block in the file gives the EventID, event latitude (°) and event longitude (°) (as in Table S1) for the events in that cluster.
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